Invasive Species

Non-native invasive plants, whether accidentally introduced or purposefully used in gardening, aggressively push out native species because there are no naturally occurring predators, insects or diseases to control their populations.

Many invasive species are not native to Westchester, originating from Asia, Europe, or other parts of the United States. They dominate areas where they become established. They are commonly found along roadsides, the edges of lawns and forests, in open areas, and in many other areas where native vegetation has been disturbed. 

Invasive species removal is extremely important to the biodiversity in Westchester. The following are commonly found in Irvington and should be removed.  Note each individual species has its own best management practices. We encourage hand removal of these species and stress the use of chemicals as a last resort. 

New York State defines an invasive species as “nonnative to a particular ecosystem, and whose introduction causes or is likely to cause economic or environmental harm or harm to human health.

Resources to learn more:
Planting Westchester
Lower Hudson Partnership for Regional Invasive Species Management
Help map invasive species for science
Boats and invasive species

Japaenese Barberry

English Ivy

Tree of Heaven

Amur Honeysuckle 

Norway Maple Trees

Euonymus Alatus

Japanese Knotweed

Linden Viburnum

Spotted Lanternfly

The Lanternfly has arrived in Irvington. If you spot them, please submit photos and location information to this google form. See instructions below for treatment: